//
//  AppDelegate.swift
//  BPWeiBo
//
//  Created by apple on 16/4/6.
//  Copyright © 2016年 apple. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        
        let userInfo = BPUserInfoViewModel.sharedUserInfoViewModel.loadUserInfoInDocument()
        print(userInfo)
        setNavBarThemeColor()
        
        //实例化window
        window = UIWindow(frame: UIScreen.mainScreen().bounds)
        
        //设置rootView
        window?.rootViewController = defaultRootViewCOntroller()
        window?.makeKeyAndVisible()
        
        //注册通知
        registerNotification()
        
        return true
    }

    //MARK:设置tabbar的颜色
    private func setNavBarThemeColor() {
        //设置全局颜色
        //全局颜色的设置 必须在控件实例化之前
        UINavigationBar.appearance().tintColor = UIColor.orangeColor()
    }
    
    //MARK:判断是否登录,如果登录过就显示欢迎界面 没有登录就显示访客界面
    private func defaultRootViewCOntroller() -> UIViewController {
    
        return BPUserInfoViewModel.sharedUserInfoViewModel.userLogin ? BPWelcomeViewController() : BPMainViewController()
    }

    
    //MARK:设置通知中心,把切换控制器的代码用通知来实现
    //注册通知
    private func registerNotification() {
    // object: 监听那个对象发出的通知  一般设置为 nil 表示监听任意对象发出的通知
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "changeViewController:", name: notifcationName, object: nil)
    
    }
    
    
    //MARK:通知监听的方法
    @objc private func changeViewController(n: NSNotification) {
        //我们在发出通知的地方给通知设置了一个object,当我们从授权界面跳转的时候,object第空,当我们从欢迎界面发出通知的时候,为"Main"
        print(n)
        if n.object != nil {
            //表示从欢迎界面发出的通知
            window?.rootViewController = BPMainViewController()
        }else {
            //表示从授权界面发出的通知
            window?.rootViewController = BPWelcomeViewController()
        }
        
    }
    
    
    //MARK 移除通知  编码规范而已
    deinit {
        NSNotificationCenter.defaultCenter().removeObserver(self)
    }
    
    
    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }


}

